MCP server for querying FRINK SPARKQL endpoints, a project by the NSF Prototype Open Knowledge Network (Proto-OKN) program.
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# MCP Proto-OKN Server [](https://opensource.org/licenses/BSD-3-Clause) [](https://www.python.org/downloads/) [](https://modelcontextprotocol.io/) [](https://pypi.org/project/mcp-proto-okn/) A Model Context Protocol (MCP) server providing seamless access to SPARQL endpoints with specialized support for the NSF-funded [Proto-OKN Project](https://www.proto-okn.net/) (Prototype Open Knowledge Network). This server enables querying the scientific knowledge graphs hosted on the [FRINK](https://frink.renci.org/) platform. In addition, third-party SPARQL endpoints can be queried. ## Natural Language Querying Across Knowledge Graphs with MCP ### [Video](https://www.youtube.com/watch?v=50L-tKCoXJE) ### [Presentation](https://nebigdatahub.org/wp-content/uploads/2026/01/MCP-Proto-OKN-Technical-Review.pdf) ## Features - **🔗 FRINK Integration**: Automatic detection and documentation linking for FRINK-hosted knowledge graphs - **🕸️ Proto-OKN Knowledge Graphs**: Optimized support for biomedical and scientific knowledge graphs, including: - 🧬 Biology & Health - 🌱 Environment - ⚖️ Justice - 🛠️ Technology & Manufacturing - **⚙️ Flexible Configuration**: Support for both FRINK and custom SPARQL endpoints - **📚 Automatic Documentation**: Registry links and metadata for Proto-OKN knowledge graphs - **🌳 Ontology-driven Search Expansion**: Queries are automatically expanded using ontology hierarchies - **🔗 Federated Query**: Prompts can query multiple endpoints ## Architecture <img src="https://raw.githubusercontent.com/sbl-sdsc/mcp-proto-okn/main/docs/images/mcp_architecture.png" alt="Tool Selector" width="600"> The MCP Server Proto-OKN acts as…
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